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FileSystemWatcher vb.net

Cory Kimble13-Aug-07 10:25

Cory Kimble

13-Aug-07 10:25

My program watches for two different files to change. txt file and mdb table. Here is my initial code.

 <pre><code>Dim watcher As New FileSystemWatcher
        Dim tablewatcher As New FileSystemWatcher

watcher.Path = "C:\Documents and Settings\bin"
        tablewatcher.Path = "C:\Documents and Settings\bin"

        tablewatcher.NotifyFilter = (NotifyFilters.LastAccess Or NotifyFilters.LastWrite Or NotifyFilters.FileName Or NotifyFilters.DirectoryName Or NotifyFilters.Size)
        watcher.Filter = "*.mdb"
        
        tablewatcher.NotifyFilter = (NotifyFilters.LastAccess Or NotifyFilters.LastWrite Or NotifyFilters.FileName Or NotifyFilters.DirectoryName Or NotifyFilters.Size)
       
        tablewatcher.Filter = ".txt"





        ' Add event handlers.
        AddHandler tablewatcher.Changed, AddressOf OnChanged

        AddHandler watcher.Changed, AddressOf OnChanged
        

        ' Begin watching.
        tablewatcher.EnableRaisingEvents = True
        watcher.EnableRaisingEvents = True</code>

My question is, is there a way to tell which file was changed? I have the following Onchanged method that I want to do one thing for one Onchanged and something else for a different Onchanged.

Private Sub OnChanged(ByVal source As Object, ByVal e As FileSystemEventArgs)

end Sub

How can I check to see which Onchanged happened? Or can I?

Re: FileSystemWatcher vb.net

Luc Pattyn13-Aug-07 10:46

Luc Pattyn

13-Aug-07 10:46

Hi Cory,

if you want completely different actions for both, why bother having only one
handler ? Just create two different handlers, and adjust the AddHandler lines.

if you want nearly the same handling, have one handler and look at the source
Object, I expect you can cast it to a FileWatcher, then compare to one of the
two FSW you instantiated (or you could set up a Hashtable or Dictionary to
associate some object to each of them).

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

this weeks tips:
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listivew subitem image

ejaz_pk13-Aug-07 8:19

ejaz_pk

13-Aug-07 8:19

Is this possible to show an image in the subitem of the listview instead of showing that in the first column of the listview?

Thanks in advance

Ejaz

Re: listivew subitem image

Christian Graus13-Aug-07 9:10

Christian Graus

13-Aug-07 9:10

If it is, it would involve owner drawing ( that is, writing your own code to draw the control ). By default, no.

Christian Graus - Microsoft MVP - C++

"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

Adding events to webbrowser control

Ahmad Zaidi13-Aug-07 7:49

Ahmad Zaidi

13-Aug-07 7:49

Hi,

I need to add an event to when a user double clicks on the webbrowser. I thought of adding it using the AttachEventHandler onto the webbrowser.document object but am not sure about the syntax. I would appreciate any help in this regard.

Thanks alot!
Ahmad

How to code th MediaPlayer or the MS-Paint

sizwe13-Aug-07 7:24

sizwe

13-Aug-07 7:24

Can you please assist me with the coding of MediaPlayer or MS-Paint using VB.net. It is part of my assignment I don't even know where to start.
I'll appreciate your assistant
Thank you.

Re: How to code th MediaPlayer or the MS-Paint

kubben13-Aug-07 7:44

kubben

13-Aug-07 7:44

You really need to try something, then if you run into a problem post your specific problem. In general we try not to do peoples homework for them.

Ben

Moving files

steve_rm13-Aug-07 4:41

steve_rm

13-Aug-07 4:41

Hello,

VS 2005

For some reason this simple bit of code doesn't work. it keeps throwing me an exception "Cannot create a file when that file already exists."

[CODE]For Each myFile As String In IO.Directory.GetFiles("G:\Temp1")
IO.File.Copy(myFile, "G:\Temp2")
Next myFile[/CODE]

I just want to move the files from 1 folder into another.

Many thanks for any suggestions.

Steve

Re: Moving files

Kschuler13-Aug-07 4:58

Kschuler

13-Aug-07 4:58

You must already have the file "G:\Temp2". The code doesn't know what to do if the file already exists. If you want to replace the file, you will first have to check that the file exists, then delete it, and THEN move the file.

Hope this helps.

Re: Moving files

Tom Deketelaere13-Aug-07 5:03

Tom Deketelaere

13-Aug-07 5:03

first of all you need to provide a name for the file to copy to

so:
dim myfilename as string()=myfile.split("\")
io.file.copy(myfile,"g:\temp2\" & myfilename(myfilename.length-1)) 'this is out of memory so could contain a mistake

second:

the error you get states that the file already exist (at the moment that because you try to override you map but you can get this when you run you'r program twice in a row)
you get this error because the override property is set to false on default
to change this:

io.file.copy(myfile,"g:\temp2" & myfilename(myfilename.length-1),true)

hope this helps

Re: Moving files

steve_rm13-Aug-07 5:52

steve_rm

13-Aug-07 5:52

Hello,

thanks for the reply.

I manage to do it like this:

<br />
For Each myFile As String In IO.Directory.GetFiles("C:\Inetpub\wwwroot\PC8")<br />
 filepath = String.Format("{0}{1}", physicalPath, myFile.Substring(myFile.LastIndexOf("\")))<br />
<br />
            IO.File.Copy(myFile, filepath)<br />
        Next myFile

If i have some folders in the same directory, which is the best method to copy them?

Many thanks,

Re: Moving files

Tom Deketelaere13-Aug-07 20:57

Tom Deketelaere

13-Aug-07 20:57

for folders you can folow a simular way only you need to use getdirectories and createdirectory
see code below

For Each myFile As String In IO.Directory.GetDirectories("C:\temp")
    Dim filepath As String = myFile.Substring(myFile.LastIndexOf("\"))
    IO.Directory.CreateDirectory("c:\temp2" & filepath)
Next myFile

MDI form closing

Marcus J. Smith13-Aug-07 3:43

Marcus J. Smith

13-Aug-07 3:43

I have a case on an MDI form where there may be unsaved data and Im trying to allow the user to cancel the close process instead of just a Yes No answer.

Is there a way for me to know that the MDI form closed or didnt close?

_Cle^aKO

"Now, a man would have opened both gates, driven through and not bothered to close either gate." - Marc Clifton (The Lounge)

Re: MDI form closing

mr_lasseter13-Aug-07 3:51

mr_lasseter

13-Aug-07 3:51

Handle the FormClosing event. You can ask the user whatever question you like and set the e.Cancel = True to stop the form from closing.

Mike Lasseter

Re: MDI form closing

Marcus J. Smith13-Aug-07 4:23

Marcus J. Smith

13-Aug-07 4:23

Yes I do that but I also do some other activities in the Main Form and they seem to be done regardless of what happens in the form closing of the MDI.

_Cle^aKO

"Now, a man would have opened both gates, driven through and not bothered to close either gate." - Marc Clifton (The Lounge)

Re: MDI form closing

mr_lasseter13-Aug-07 5:05

mr_lasseter

13-Aug-07 5:05

How are you handling the events in the main form? Are you responding to the FormClosing Event if so you should be monitoring the FormClosed Event. Besides guessing, I don't have enough information to help solve the problem.

Mike Lasseter

Re: MDI form closing

Marcus J. Smith13-Aug-07 5:09

Marcus J. Smith

13-Aug-07 5:09

The main form does a Me.ActiveMDIForm.Close.

_Cle^aKO

"Now, a man would have opened both gates, driven through and not bothered to close either gate." - Marc Clifton (The Lounge)

Re: MDI form closing

mr_lasseter13-Aug-07 5:27

mr_lasseter

13-Aug-07 5:27

I am assuming you have code that executes after the close call and you want to prevent this code from executing. I believe you have 2 options:

1. You can count the number of Mdi child forms that are being displayed before and after you call to AcitveMDIChild.Close. If the count changes you know the form closed otehrwise something has prevented to from closing.

2. Move all the code after the call to Me.ActiveMdiForm.Close to a different function that handles an event from the MDIChild when the form actually closes.

Hope that helps.

Mike Lasseter

User resizing of column in datagrid

GuyThiebaut13-Aug-07 3:37

GuyThiebaut

13-Aug-07 3:37

Is there a property to allow the last column in a datagrid to be dragged, and hence expanded, past the bounds of the datagrid?

The issue is that the user has to double click the last column to resize it past the bounds of the datagrid.

I would like the column resizing to work in the same manner as windows explorer.

I have googled but to no avail.

Any help appreciated.

Guy

You always pass failure on the way to success.

database connectivity between visual basic 6.0 and oracle 8.0

prashanna kumar13-Aug-07 3:28

prashanna kumar

13-Aug-07 3:28

how can i connect visual basics with oracle8.0

prashanna

Re: database connectivity between visual basic 6.0 and oracle 8.0

mr_lasseter13-Aug-07 3:53

mr_lasseter

13-Aug-07 3:53

Try http://www.connectionstrings.com/?carrier=oracle[^]

Mike Lasseter

filter error!!

shapinuva13-Aug-07 2:42

shapinuva

13-Aug-07 2:42

Sql = "select * from tblSipFatMal where [SIP_TARIH] between DateSipTarBul1 and DateSipTarBul2"

Me.tblSipFatMal.FillSort = "[SIP_TARIH] DESC"

Me.tblSipFatMal.FillFilter = ""

this my prepare code.i have got two datetimepicker.i want between filter this datetimepicker..

can i help me?

Re: filter error!!

Christian Graus13-Aug-07 8:21

Christian Graus

13-Aug-07 8:21

shapinuva wrote:
can i help me?

Doesn't look like it.

shapinuva wrote:
DateSipTarBul1 and DateSipTarBul2"

This is never going to work. SQL is a different language to VB, your code needs to build valid SQL, the database cannot tell that these are variables within your VB code. So, your best bet is to write a stored proc, but if you want quick and dirty, just concatenate a string which includes the values of the dates in those controls/variables, instead of the names.

Christian Graus - Microsoft MVP - C++

"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

How can I change the numeral shapes to arabic?

Mic Mathi13-Aug-07 2:42

Mic Mathi

13-Aug-07 2:42

How can I convert the keyboard layout to arabic? I could covert the characters using the API 'LoadKeyboardLayout'. But the digits are not converting to arabic. I searched in the net for the API I understand the digits can convert with the function 'SetLocaleInfo'. This function receives 3 arguments but i don't know the value should be passed to this funtions. Please help to find the values of the arguments.

Thanks and Regards,
Mic

Please help me how to connect to LDAP using vb.net

RichardBlare13-Aug-07 2:34

RichardBlare

13-Aug-07 2:34

Dear all,
I would like to write a vb.net program that connect to LDAP and search the users from LDAP and display in text box or listbox. Thanks in advance.

RB

Last Visit: 31-Dec-99 18:00 Last Update: 30-Apr-24 2:32

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